Back brace



FIG. 1 is a front and top perspective view of a back brace, showing my new design;

FIG. 2 is a rear and bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of a portion labeled, ‘FIG. 9’ in FIG. 1;

FIG. 10 is an exploded view of the back brace; and,

FIG. 11 is a perspective view thereof, showing the back brace in a using position.

The dash dot dash lines in FIGS. 1 and 9 are for the purpose of depicting the cut line of the enlarged view and form no part of the claim. The dashed broken lines in the figures illustrate portions of the article that form no part of the claimed design. The broken lines in FIG. 11 showing of a human body depict environmental structure that form no part of the claimed design. 

CLAIM The ornamental design for a back brace, as shown and described. 